Burn

A Burn is a status condition that affects minions and heroes. When an enemy is burned, they take damage for X turns (usually 3), and when burnt they have reduced damage. After the burn wears off, the damage is restored.

Example
A Mage uses Scorch, dealing 3 damage and burning a Guidance for 2 damage for 3 turns. Guidance is a 9/13. After the burn effect and damage applies, Guidance loses five health, and has a damage decrease of 2. It now becomes a 7/8.